계측기전문 뉴텍계기

주파수측정기 LF-423

* Portable line frequency monitor, easy carry out & operation.
* Wide measuring rage from 0.5 Hz to 500 Hz.
* 0.01 Hz, high resolution
* Quartz crystal time base, 0.05 %, high accuracy.
* Wide input voltage 5 to 250 ACV.
* LCD display allows clear readout even at high ambient light levels.
* Sine wave or square wave input signal are available.
* Last value, Maximum value & Minimum value with recall.

FEATURES
* Portable line frequency monitor, easy carry out & operation.
* Wide measuring rage from 0.5 Hz to 500 Hz.
* 0.01 Hz, high resolution
* Quartz crystal time base, 0.05 %, high accuracy.
* Wide input voltage 5 to 250 ACV.
* LCD display allows clear readout even at high ambient light levels.
* Sine wave or square wave input signal are available.
* Last value, Maximum value & Minimum value with recall.

APPLICATIONS
* Check output of frequency-regulated and unregulated DC to AC converters.
* Verify accuracy and stability of synchronous motors & clocks.
* Monitor frequency of mobile and portable generators under load.
* Obtain the long term maximum, minimum & average frequency of fluctuating power sources.
* Continuously monitor frequency in engineering and school laboratories when delicate experiments are performed or

calibration of equipment is taking place.

제품 사양
Display	5 digits, 10 mm ( 0.4" ) LCD
Range	0.5 to 500.0 Hz.
Resolution	0.01 Hz 0.5 to 99.99 Hz.
	0.1 Hz 100.0 to 500.0 Hz.
Input voltage	5 to 250 ACV, sine wave or square wave.
Accuracy (23± 10 ℃)	± ( 0.05 % + 1 d ) .
Sampling Time	1 sec. ( 1 Hz ).
Time base	Quartz crystal
Circuit	Exclusive one-chip of microcomputer LSI circuit.
Memory	Last value, Max. value, Min. value.
Battery	1.5 V AA (UM-3) battery x 4 PCs.
Power Current	Approx. DC 5 mA.
Operating Temperature	0 to 50 ℃ (32 to 122 ℉).
Operating Humidity	Less than 80% RH.
Weight	375 g ( 0.83 LB )/including battery.
Dimension	190 x 72 x 37 mm (7.5 x 2.8 x 1.5 inch).